10.8 sec in total
354 ms
9.9 sec
562 ms
Click here to check amazing Bike Centrum content for Czech Republic. Otherwise, check out these important facts you probably never knew about bike-centrum.cz
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Visit bike-centrum.czWe analyzed Bike-centrum.cz page load time and found that the first response time was 354 ms and then it took 10.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
bike-centrum.cz performance score
name
value
score
weighting
Value5.7 s
5/100
10%
Value10.8 s
0/100
25%
Value11.6 s
4/100
10%
Value380 ms
70/100
30%
Value0.067
97/100
15%
Value19.1 s
3/100
10%
354 ms
2297 ms
233 ms
233 ms
236 ms
Our browser made a total of 331 requests to load all elements on the main page. We found that 96% of them (319 requests) were addressed to the original Bike-centrum.cz, 1% (3 requests) were made to V2.zopim.com and 1% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Bike-centrum.cz.
Page size can be reduced by 965.1 kB (24%)
4.0 MB
3.1 MB
In fact, the total size of Bike-centrum.cz main page is 4.0 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 3.1 MB which makes up the majority of the site volume.
Potential reduce by 407.2 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 63.6 kB, which is 15% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 407.2 kB or 93% of the original size.
Potential reduce by 166.6 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Bike Centrum images are well optimized though.
Potential reduce by 266.8 kB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 266.8 kB or 74% of the original size.
Potential reduce by 124.5 kB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Bike-centrum.cz needs all CSS files to be minified and compressed as it can save up to 124.5 kB or 85% of the original size.
Number of requests can be reduced by 43 (13%)
328
285
The browser has sent 328 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bike Centrum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
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bike-centrum.cz accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
ARIA input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Links do not have a discernible name
bike-centrum.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
bike-centrum.cz SEO score
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
Tap targets are not sized appropriately
CS
N/A
WINDOWS-1250
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Bike-centrum.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Bike-centrum.cz main page’s claimed encoding is windows-1250. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
bike-centrum.cz
Open Graph description is not detected on the main page of Bike Centrum. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: